3% 珪素鋼板における優先方位再結晶粒の成因

概要

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The origin of the preferred recrystallized texture (011)[100] in cold rolled (111)[211] single crystals of Fe-3% Si was studied by observing changes in microstructures while heating foil specimens inside a 500kV electron microscope, and by determining the statistical distribution in orientations of small recrystallizing grains. The formation and the growth of subgrains are found to be a continuous process, in which the size of cells or subgrains increases gradually through 'cooperative rearrangement' of the subgrain boun-daries ; in other words, a composite process of boundary decomposition, combination and migration. The subgrain growth is enhanced in the regions of heavily curved lattice, where the (011)[100]-oriented cell groups are embeded. The (011)[100] grains grow appreciably larger than other grains in the later stages of rearrangement, and extensively according to the rapid migration of the high angle boundaries in the final stage. The predominance of the (011)[100] orientation in the recrystallized textures is the result of the (011)[100] subgrains to be far larger in number than that of the other recrystallizing grains. The preferred formation of the (011)[100]-oriented cell groups and subgrains was discussed, as proposed by CAHN, on the basis of the accumulated dislocations belonging to a predominant slip system in the rolling deformation.
社団法人日本鉄鋼協会の論文
1970-05-01